Legal arrangements rest on behavioural, cognitive, social, and other assumptions regarding their role and function in society and the legal system. The identification and subsequent evaluation of these assumptions is an important task for legal scholarship. In this article, we focus on the identification and categorisation of these assumptions, providing conceptual distinctions and methodological guidance. We distinguish between assumptions about the value(s), norm(s), or interest(s) underlying a legal arrangement, which can be legal or non-legal, and assumptions about the relationship between the legal arrangement and its underlying value(s), norm(s), or interest(s), which can be logical, causal, or contributory. Regarding the identification, we consider explicit references and inference to the best explanation and theory-driven evaluations as possible methods. Inference to the best explanation, we posit, functions as a manner of reconstructing the theory that the person(s) creating a legal arrangement had in mind regarding the place and function of that legal arrangement in society. Given this, we offer a step-by-step approach to reconstructing this theory in use, drawing from theory-driven evaluations and its sources in the social sciences. These distinctions and guidelines can contribute to understanding the context and untangling the complexities involved in identifying the assumptions that underlie legal arrangements.

Many doctrinal legal research questions require making use of other academic disciplines or perspectives. This article explains the relevance of legal philosophy for doctrinal research projects. Often legal research questions have conceptual or evaluative dimensions that presuppose philosophical understanding. For research on the concept of democracy, the function of constitutional rights, or the possible introduction of a referendum in the Netherlands, questions of a philosophical nature need to be answered. Legal philosophy can supplement and enrich doctrinal research in various ways. In this article, we present seven purposes that legal philosophy may serve in the context of a doctrinal research project: conceptual clarification, exposition and reconstruction of fundamental normative principles and values, theory building, providing creative perspectives, structural critiques, evaluation, and recommendations. For each objective, we illustrate how to use relevant philosophical methods. Thus, this article complements our earlier publication ‘Legal Philosophy as an Enrichment of Doctrinal Research – Part I: Introducing Three Philosophical Methods’.¹x http://www.lawandmethod.nl/tijdschrift/lawandmethod/2020/01/lawandmethod-D-19-00006.

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• * This text has been presented to classes at the University of Zagreb, Queen Mary University of London and Erasmus School of Law, Rotterdam; we profited from the feedback of our students. We also want to thank Irma Bluijs, Machteld Geuskens, Tamar de Waal and the reviewers for their helpful comments on previous versions of this article, and Jacqueline Brand and Robert Poll for providing research assistance.

• 1 http://www.lawandmethod.nl/tijdschrift/lawandmethod/2020/01/lawandmethod-D-19-00006.

The article deals with the possibility of socializing law students through space. It first indicates which features of space affect the possibility of influencing interactions and identity. It then discusses how we can use symbolic interactionism to study interactions and socialization in spaces of law faculties. Then, on the basis of the interviews conducted with law faculty students about their space perception, it shows how to research student socialization through space and how far-reaching its effects can be.

In this article, we discuss a particular form of interdisciplinary legal research. We focus on a discipline that may be fruitfully combined with doctrinal research, namely philosophy. The aim of this article is to give an account of the methods of philosophy that are most relevant and useful for doctrinal legal scholars. Our focus is therefore mostly on legal philosophy and the philosophical subdisciplines closely related to it, such as political philosophy and ethics. We characterize legal philosophy in three complementary ways: as an activity, as insights, and as theories. We then discuss three methods of legal philosophy: argumentation analysis and construction, author analysis and reflective equilibrium. In the practice of research these three methods are usually combined, as we will show with various examples.

This article looks at how normative questions, i.e. ‘what should the law be?‘, are approached in modern labour law scholarship. A distinction is made between internal and external normative frameworks for analysis, whereby internal frameworks are made up of principles, values or standards that are part of the law and the external frameworks are made up of theories outside of law. As a functional legal field, labour law can also benefit to a great deal from empirical research. However, the article argues that empirical facts by themselves have a limited normative value and that we need a normative framework in order to answer normative and evaluative questions. Therefore, the aim of the article is to review, clarify and evaluate the internal normative framework of labour law.

Different legal rules can lead to the same observable outcome, making it difficult to identify the most influential rule. This article addresses this gap by focusing on how competing explanatory theories derived from a doctrinal analysis can be assessed using a methodology called process-tracing. One of process-tracing’s main uses is to link explanatory theories to empirical evidence, permitting an assessment of causal mechanisms’ practical impact in comparison to each other. This article demonstrates the potential and practical implementation of process-tracing in the context of empirical legal research. In addition to the core characteristics of process-tracing, the paper clarifies when process-tracing can add to a doctrinal analysis and the requirements which have to be met. Furthermore, the process of linking doctrinal work with empirical evidence relying on process-tracing is shown, using the example of copyright ownership in the broadcasting sector. As a result, this paper demonstrates the added value of a process-tracing analysis carried out in addition to doctrinal work, in particular the insights into industry practice it generates.

This paper discusses three approaches that can be helpful in the area of comparative rights jurisprudence, oriented in reference to three different kinds of studies that are possible in that area. To a large extent the methods for a comparative legal research depend on the research question and the goal of the researcher. First, a comparative law study may focus on the sociocultural context that led to the elaboration of differences or similarities in the protection of rights. Second, a comparative law approach can be a normative enterprise. It can focus on engaging in a philosophical analysis enlightened by the differences or similarities in the regulation of rights, in order to propose concrete solutions for the regulation of a right. Third, a comparative law approach can combine both elements of the two previously mentioned approaches. The paper discusses the challenges that the researcher faces in her attempt to use these methodologies and how these challenges can be overcome. The law as a normative discipline has its own constraints of justifiability. If what motivates a comparative law study is the search for principles of justice the researcher needs to persuade that her methodological approach serves her aim.

The article discusses the contribution of comparative law to the study of federalism and decentralisation. In doing so, it stresses the relevance of the notion of federalising process, as elaborated by Carl J. Friedrich.

This article examines the main assumptions and theoretical underpinnings of case study method in legal studies. It considers the importance of research design, including the crucial roles of the academic literature review, the research question and the use of rival theories to develop hypotheses and the practice of identifying the observable implications of those hypotheses. It considers the selection of data sources and modes of analysis to allow for valid analytical inferences to be drawn in respect of them. In doing so it considers, in brief, the importance of case study selection and variations such as single or multi case approaches. Finally it provides thoughts about the strengths and weaknesses associated with undertaking socio-legal and comparative legal research via a case study method, addressing frequent stumbling blocks encountered by legal researchers, as well as ways to militate them. It is written with those new to the method in mind.

This paper raises two methodological questions from a philosophical perspective: (i) what is involved in a functionalist approach to law and (ii) what should be the focus of such an approach? To answer these questions, I will take two steps with both. To begin with, I argue that Pettit’s view on functionalist approaches may be made relevant for law; functionalist accounts target a virtual mechanism that explains why a system will be resilient under changes in either the system or its environment. Secondly, I make a distinction between two interpretations of his key-concept ‘resilience’, one in mechanical, the other in teleological terms. With regard to the second question I will take two steps as well. I argue why it does not make sense to ascribe wide functions to law, followed by a plea for a limited view on the function of law. This limited view is based on a teleological understanding of the law’s resilience. I argue that these two modes are interrelated in ways that are relevant for the interdisciplinary study of law.

This article examines the importance of the social evidence base in relation to the development of the law. It argues that there is a need for those lawyers who play a part in law reform (legislators and those involved in the law reform process) and for those who play a part in formulating policy-based common law rules (judges and practitioners) to know more about how facts are established in the social sciences. It argues that lawyers need sufficient knowledge and skills in order to be able to critically assess the facts and evidence base when examining new legislation and also when preparing, arguing and determining the outcomes of legal disputes. For this reason the article argues that lawyers need enhanced training in empirical methodologies in order to function effectively in modern legal contexts.

This article seeks to describe a paradigmatic view on legal research, based on the thought processes underlining Kuhn’s The Structure of Scientific Revolutions, in particular as how revolutionary change is coming about through a reflexive attitude towards developments that do not fit in the prevailing assumptions in an existing paradigm or research methodology. It allows for a description of ‘normal legal research’ and the assumptions upon which normal legal research is based. It also allows for an explanation as to how these assumptions are no longer exclusively valid but carry with them limitations in the face of structural developments at the level of society. An important feature of the paradigmatic view, then, is that it is able to take issue with these developments by incorporating social theory in our understanding of law.